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It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report.
False. It is not essential.
Question: (a) Discuss the difference between a composite key and a composite attribute. How would each be indicated in an E-R diagram? Support your answer with appropriate exam
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Examples:- Hierarchical Model: It tells data as and relationships by hierarchy of data values. Figure illustrates an example of hierarchical model. Now a day's these models are
Define what Immediate database modification technique uses? Ans: Both undo and redo.
Single-Valued Dependencies A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some
What is an E-R model? Draw an E-R Diagram for the company database with following Descriptions? The company is organized within departments. Each department has a unique name a
deffine class&object
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
Java program for horrizontal fragmentation in distributed database
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